The W's:

. Beerus (Dragon Ball)

. Sans (Undertale)

. Alastor (Hazbin Hotel)

. Black Hat (Villainous)

. Megatron (Transformers | Debatable)

. The Collector (The Owl House)

. Toffee (Star vs. The Forces of Evil)

. Aku (Samurai Jack)

. HIM (The Powerpuff Girls)

. The Guardian (Amphibia)

. Spongebob Squarepants

. Princess Luna (My Little Pony)

. Jafar (Aladdin)

. Freddy Kruger (Nightmare on Elm Street)

. Flumpty (One Nights at Flumpty | Debatable)

. Aizen (Bleach)

The L's:

. Discord (My Little Pony)

. Shuma-Gorath (Marvel Comics)

. GOLB (Adventure Time | Debatable)

. Godzilla Ultima (Godzilla Singular Point)

. Asriel Dreemurr (Undertale)

. Arceus (Pokemon | Debatable)

. Galactus (Marvel Comics)

. Ra (Egyptian Mythology | Debatable)

. Dimentio (Super Paper Mario)

. Lord English (Homestuck)

. Unicron (Transformers)

. The Lich (Adventure Time | Debatable)

. Mr. Mxyzptlk (DC Comics)

. Sun Wukong (Journey to The West)

. Novel Pennywise (Steven King's IT)

. Sephiroth (Final Fantasy | Debatable)